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Finding the Third Proportional to 666 and 716

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Solution

The third proportional to 666 and 716 is: 769.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    666 : 716 = 716 : x
  2. Step 2: Convert to fraction form
    666/716 = 716/x
  3. Step 3: Cross multiply
    666x = 716 × 716
  4. Step 4: Simplify right side
    666x = 512,656
  5. Step 5: Solve for x
    x = 512,656/666
  6. Step 6: Final answer
    x = 769.75

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Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.